Harrison County (Biloxi)
December
Weather in Harrison County, Mississippi for December 2025
Your guide to Harrison County weather in December - trends and predictions
Until now, December 2025 in Harrison County is slightly cooler than the historical average by -1.1 °F.
The forecast for the next days in Harrison County predicts temperatures to be around 20 °F, close to the historical average.
In general, the average temperature in Harrison County at the beginning of December is 14.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.9 °F by the end of December.
Harrison County experiences moderate rainfall in December, with an average of 8 rainy days and a total precipitation of 265 mm.
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Temperatures
Rain 🌧️
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23
Dry days
8
Rainy days
0
Snow days
16°/9°
Temperatures
17 km/h
Avg max wind
76 %
Avg humidity
Harrison County Weather December
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Temperatures trend during December in Harrison County
See the weather trend as well as the moving average line
December weather in Harrison County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Partly cloudy | 15° /8° | 0 mm | 4 | |
| Dec. 2 |  Sunny | 17° /6° | 9.9 mm | 5 | |
| Dec. 3 | Sunny | 13° /3° | 0 mm | 4 | |
| Dec. 4 | Partly cloudy | 14° /7° | 35 mm | 4 | |
| Dec. 5 |  Moderate or heavy rain shower | 17° /10° | 14.6 mm | 4 | |
| Dec. 6 | Sunny | 13° /6° | 0 mm | 4 | |
| Dec. 7 |  Overcast | 15° /7° | 0 mm | 4 | |
| Dec. 8 | Overcast | 16° /10° | 0 mm | 4 | |
| Dec. 9 | Moderate or heavy rain shower | 13° /10° | 36.7 mm | 3 | |
| Dec. 10 | Moderate or heavy rain shower | 16° /11° | 32.5 mm | 4 | |
| Dec. 11 | Sunny | 14° /7° | 0.8 mm | 5 | |
| Dec. 12 | Partly cloudy | 15° /8° | 0 mm | 4 | |
| Dec. 13 | Overcast | 16° /11° | 0 mm | 4 | |
| Dec. 14 | Overcast | 17° /9° | 1.9 mm | 4 | |
| Dec. 15 |  Patchy rain possible | 14° /7° | 0.2 mm | 4 | |
| Dec. 16 | Overcast | 16° /9° | 0 mm | 4 | |
| Dec. 17 | Overcast | 17° /12° | 3.3 mm | 4 | |
| Dec. 18 | Overcast | 19° /14° | 113.1 mm | 4 | |
| Dec. 19 | Overcast | 18° /11° | 0 mm | 4 | |
| Dec. 20 | Partly cloudy | 17° /6° | 0 mm | 5 | |
| Dec. 21 | Patchy rain possible | 18° /14° | 2.8 mm | 0.3 | |
| Dec. 22 |  Moderate rain | 17° /16° | 15.7 mm | 0.6 | |
| Dec. 23 | Overcast | 17° /15° | 0 mm | 0.8 | |
| Dec. 24 | Sunny | 21° /14° | 0 mm | 0.8 | |
| Dec. 25 |  Mist | 20° /15° | 0 mm | 0 | |
| Dec. 26 | Sunny | 21° /15° | 0 mm | 5 | |
| Dec. 27 | Sunny | 22° /15° | 0 mm | 5 | |
| Dec. 28 | Patchy rain possible | 23° /15° | 0 mm | 4 | |
| Dec. 29 | Patchy rain possible | 20° /15° | 0 mm | 4 | |
| Dec. 30 | Partly cloudy | 21° /16° | 0 mm | 5 | |
| Dec. 31 | Patchy rain possible | 19° /17° | 3.3 mm | 4 | |
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Important Notice
Our weather forecast for Harrison County in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Harrison County forecast closer to your planned date for the most up-to-date weather information.
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Harrison County in December - FAQ
What are the expected maximum and minimum temperatures in Harrison County during December?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Harrison County during December?
Significant rainfall exceeding 265 mm is expected in Harrison County during December, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Harrison County during December?
The average wind speed in Harrison County during December is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Harrison County
Explore the daily rainfall trends and prepare for Harrison Countys December weather 💧
Typically, Harrison County has 8 rainy days in December with a total of 265 mm of rainfall.
UV exposure in Harrison County during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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